Nut lock



March 30 1925'.

w. W. FORD NUT LOCK Filed May 20, 1924 Patented Mar. 30, 1926.

1 1 N TEDIST TESJ WILLIAM, w. roan, on PITTSB R H, rEN nsY'ivANIA.

" nor 12061;.

State of Pennsylvania, haveinvented"certain new and useful'lmprovements in Nut Locks, oat which the following s a'specifica tion. a r

My invention relates toimprovements in nut locks, and is designed to provide -a device of this type which may be economically-manuiactured: trom rolled metal blank,v having a mainbody portion punched outfor;

' passage of the bolt, and'laterally arranged wingextensions having integral resilient. lug port-i0ns,xbcnt outwardiy' "from the, body portion of the-lock, at one or bothsid'es oi" the centralfopening, and adapted to engage the side or sides of the nut.

The. ma lockis made of was of'a' cross section adapted to provide for the bowing out ofthe: main middleportion, be-

tween .its terminal edges, so 7 that it may be on a'bolt, and will-by its main body portion exert an outward spring tension'againstthe nut, in addition to the individual spring tension'and holding action of the indiyidual I,

i I l I nut lockbeneath it;-

The device is adapted to, the positivehoid ingot the-nut, whenscrewed topositionp and to permit of the turning of the-"corners of the nut over the resilient locking lugs, in' screwing, and to permit of unscrewing of lug-or lugs;

the nut: inz'the same mannenl-without impairment of the holding efliciency. I I Thepresent invention is generally similar to the nut lock of BartIeyiP-atent No. 1,198,515, of September 19,. i916, assigned" to: the present applicant, and hasfinview to overcome certain difl'iculties in manufacture v and to. provide features of improvement in v f connection with: the rolling of the blank and in the resulting articleas manufactured;

In the priornut lock' of B artl ey',-theblank was sheared crosswise from a rolled metal lic" strip: having a "middle thickened portion, with the length of thenut lock approximating the width of the blank, and with the partly severed resilient locking tongues extending inwardly at approximately right angles to or crosswise of the longitudinal fibre or grain of the rolled metal. l

, In my present improvement, I form the nut lock from a blanksheared crosswise froma rolled "strip, preferably steel, but

Application filed May 20,1924. sensin #514,551:

with thewidth ofthe blank and finished nut lock corresponding tothe width or the strip, and with the fibrev 0r grain lengthwise otthe article audits tongues; A further teature of advantage and novelty is in thez'diss position of the metal as to the thickened por' tion, by reinforcingthe side or edge portionsby continuously uniform main spring members, at each sidejof the- .;middle bolt i hole, utilizing; the middlelthinner portion-7' for-the loekingtongues. 1 1 1 7 Que preferred.embodiment oftherinvem; tion isrshown in the accompanyingdrawing inwl-iiehz' jfifl Fig; lie at View of the nut lock in; front thereon in dotted lines r i Fig'. 2' is: a partial sectional view through.- a portion- 10 f aa'rail' and fish pl-ate, showing the appli'cationiof thenut lock to a bolt and nut; 7

F igm 3 is a, horizontal sectional "View through the nut lock, on the line IILJH of Fig; 1, and" showing'it'ini operative posi so tion and: resiliently extended prior to tightening the nut to holding position Figiizis a similar Vi'ews'howi'ng the nut screwed down to. placeand 1 compressing the elevatiom;indicating .the nut in position Y i tinuously rolled section of ,steel having at;

smooth. front anda middle rear'channel' 3 of minimumwthickness. approximating in: f Widththe' diameter vof th'ezbolt hol'e 45' and between the outer reinforced or thicker edge:

portionso, 5, as shown; The body portion of the lock-is slightly bowedoutwardly lengthwise beyond the normal fiat plane a, a, Fig; 5 so that under compression-of the nut, the middle body portion may be pressed inwardly against the surfaceof the v fish plate, or of any other member secured by the bolt, correspondingto the said ,flat plane a, a. The nut lock, of tempered spring steel, when thus compressed by the nut when screwed tight,'will exert a continuous tightening tension on the nut and bolt, compensating for any possiblewloosen- VIII-VIII, respec to ing due to wear of the threads or contacting parts, elongation, etc.

At one or both sides of the bolt holed, endwise, is a resilient tongue or. looking ear.

6, partly severed from the thinner middle channeled portion of the blank by a U-shaped punch opening 7 The tongue 6 as thus formedis integral with and. forms" a resilient dep'ressible locking member for the nut. Its inner end is squaredas at 8, for the full thickness at thei middle and the outer corners are rounded as at 9, while the free end of the tongue extends outwardly beyond the face of the washer plate, for good bearing engagement against the flat side of the nut, as in Figs. 3 and 4E.

The reinforced or thickened side portions 5 being longitudinal ofthe device at each side of'the middle thin channeled portion constitute the main elastic members of the plate, while being subject to the direct fiattening pressure of the nut. The tongues I Y6, formed from the thinner middle portion,

are freelyresilient under the turning action of the nut, and are easily depressed by the nut riding over theirrounded corners,thev

tonguesspringing outwardly to'holding ena ement each "time a flat side is ,resented;

A further advantage in the continuous channel 3 is that ample clearance is provided, not only for the full underside of the tongues, but ateach end, thereby facilitating removal of any accumulation of dustor other foreign matter or obstruction.v 7

Due to the grain or fibre of .the metal being lengthwise of the device, the side portions 5 and the tongues 6 will maintain their resiliency so that the lock-may be used indefinitely, and maybe subjected to-Successive applications and compressions with out danger of breakage or deterioration lr The operation of the device is generally similar to that of the Bartley lock, but is possessed of special advantages in construction, operation and economy, due tothe. ar-

rangement of the metal and dispositionof the parts inlt-he mannershown.

What I claim is: I.

1. A nut lock consisting of a washer platehaving a' middle. longitudinal channel, providing a continuous thin middle portion, a bolt hole, and an integral resilient locking tongue extending inwardlytowards the bolt hole and provided I with rounded corners, the fibre or grain of the plate extending lengthwise of the plate and said tongue 2. A nutlockconsisting of a washer plate having outer longitudinal thickened portionswith an intervening longitudinal thin portion, a bolt hole extending through said thin portion, and an integr'al resilient look- 'yond the face of the plate, the fibre or grain of the plate extending lengthwise of the plate and said tongue.

4. A nut'locking washer having a longi tudinally concave inner face between a pair of longitudinal reinforcing ribs, one at each side of a middle thin portion providing said concave face, a bolt hole 'therethrough, and a partly severed resilient locking tongue formed from the thin portion extending towards the bolt hole and providedwith a nut engaging terminal having roundedcorners. the fibre or grain of the plate extending lengthwise of the plate and .saiditongue.

5.,A nut locking washer formed of a blank sheared crosswise of a: rolled strip whereby the fibre or grain of the strip is lengthwise, said strip having thickened reinforcing sides and a middle thin :p'ortion and'arched to form a resilient compressible plate, andprovided witha middle bolt hole and a partly severed locking-tongue formed in the middle thin portion.

6. A nut locking washerv formed of a blanksheared crosswise of a rolled strip whereby the fibre or grain of the strip is lengthwise, said strip having thickened reinforcingv sides and a middle thin portion and arched to form'a resilient compressible plate, and provided with amiddle boltrhole and oppositely disposed partly severed looking tongues formed in the middle thin-poi tion, having their free resilient terminals confronting the bolt hole.

In testimony whereof I sign ature. 7

WILLIAM WV. FORD.

hereunto affix my Inn IHL 

